Method of making radiating-casings



C. SONNEBORN.

METHOD OF MAKING RADIATING CASINGS. APPLICATION FILED NOV. 21, 1917. RENEWED um. 5, m9.

J Patented Aug. 3, 1920.

2 SHEETS-SHEET l. 7

wrruzsszs myznTon C.SONNEBORN. METHOD OF MAKING RADIATING CASINGS. APPLICATION FILED NOV. 21', 1911. RENEWED mus. 1919.

Patented m. 2, 1920.

2 SHEETS-SHEET 2.

iuv'znfon UNITED STATES PATENT OFFICE- CHARLES SONNEBORN, OF WEST PITTSBURG, PENNSYLVANIA, ASSIGNOR TO PRESSED METAL RADIATOR COMPANY, A CORPORATION OF PENNSYL- VANIA.

Specification of Letters Patent.

Patented Aug. 3,1920; Y

Original application filed September 21, 1917, Serial No. 192,518. Divided and this application filed November 21, 1917, Serial No. 203,126. Renewed January 6, 1919. Serial No. 269,927.

To all whom it may concern:

Be it known thatI, Cmnnns SONNEBORN, citizen of the United States, residing at WVest Pittsburg, in the county of Lawrence and State of Pennsylvama, have invented certain new and useful Improvements in Methods of Making Radiating- Casings, of which the following is a specification. I

My invention consists of an improved method of making radiating casings, as the casings of transformers or other similar vessels adapted to contain liquids, and has in view to provide a casing for such use having a large radiating area for eflfectlng'or assisting cooling of the contained or circulating liquid. A common expedient in vessels of this kind is to form the wall of the vessel of sheet metal in corrugated or similar form whereby to provide a series of somewhat closely contiguous liquid-containing portions with intervening air circulation spaces.

My invention has in view to construct such a casing or vessel of a series of previously pressed or formed units or sections, of sheet metal, so made that when the edges of the units are joined, and the entire series is adjusted to the final arrangement providing the inclosing vessel, whether circular in lar form in cross section,'but have illustrated in the drawings a conventional circular shape which is well adapted to the purposes in view.

Referring to the drawings Figure 1 is a view of the complete vessel in elevation partly in section indicated by the line I, I of Fi 2; Fig. 2 is a hal? plan view of the vessel wall;

Fig. 3 is a half .cross sectional view indicated by the line III, III of Fig. 1;

Fig 4 is a perspective view of one of the pressed sheet metal sections or units, detached';

Fig. 5 is an enlarged cross sectional detail view showing a plurality of such units when welded together in continuous formation and prior to adjustment .to the cross sectional contour of the complete vessel; and

Fig. 6 is a similar view showing a modified construction of the inner portion of the units. p

The present application is a division of my prior application filed September 21, 1917, Serial Number 192,518.

In carrying out the invention the entire side wall of the casing or vessel is formed from a series of units or sections, which are illustrated as of U-shape and which, when welded together provide, by their side walls the laterally or radially'projectin liquidcontaining radiating members b. ach unit a, is formed of sheet metal pressed to substantially U-shape with the two side walls 22 each terminating in a connecting edge '3 and having a back 4. The free edges 3 are offset from the side wall portions 2, as shown at 5, so that when the sections are welded together, the intervening liquid-containing or circulating'spaces 6 are formed. Each unit a at its end is provided with a flat straight portion 7 'lying substantially in the plane of the inner portion of the unit, and which portions 7, when the units are welded together provide annular rims by means of which the complete side wall of the vessel is joined to the flange 8 of a bottom 9, by welding, and with the radial members b projecting outwardly beyond said rims. The bottom 9 preferably slopes toward its center and is provided with a drain connection 10, as will be readily understood.

In the construction illustrated, suitable sheet metal blanks are pressed to form the U-shaped units a above described. A plu rality of the units a are then placed side by side with their terminal edges 3 extending outwardly and in alinement so that they nal edges 3 are then secured together by will abut eachother, and these several termiwelding, thus forming the units into a um- I tary structure having radiating members I). -When a sufiicient number of the units a have been thus joined, the resultant continuously straight body is pressed or bent to form the'surrounding side wall of the receptacle of any desired shape, thereby spreading or enlarging the space between the radiating'members b, and bringing the i are thus formed into a continuous rim or flange at each end and the flanged bottom 9 is then inserted within the receptacle and abutting the straight portion 7, and welded or otherwise secured in place.

It will be be understood also that a top or cover for the vessel of any suitable form or construction may be secured to the upper annular flange of terminals 7 similar to the manner of attaching the bottom 9, and of any construction best adapted to the uses for which the vessel is designed.

The result of my invention is the provision of a radiating casing having a series of many elongated closely adjacent narrow deep pockets that will permit of expansion and contraction without injury. It gives a maximum cooling surface, allowing the air to enter between the circulating vanes at the bottom and escape undisturbed at the top. The casing may easily be made of sheet metal, thereby reducing the cost of manufacture to a minimum. The preferable method of weldingthe meeting edges 3 is by the oily-acetylene flame or by electrical welding, although any other practicable method may be used.

It will be recognized that the invention is not necessarily limited to the specific type or design or proportions of the article shown and that it may also be utilized with good results and other forms of mechanisms than that described, or be otherwise variously changed or modified by the mechanic skilled in the art within thescope of the appended claims, without departing from the spirit of my invention.

lVhat I claim is j 1. In the method of making radiating casings, the steps which consist in pressing unit blanks to form thereon ofi'set edge portions extending along one of their sides and across their ends, assembling a plurality of such units with the offset edge portions of adjacent units in contact, and weldin together said ofl'set portions to form a ho y having hollow radiating projections.

2. The method of making a radiating casing consisting in forming units having oflset edge portions along one of their sides and across their ends, assembling a plurality of said units with their oflset edge portions in contact, welding said contacting edge porwall of the casing, and having the edges of the radially or outwardly extending wall portions and also of the projecting end portions offset, assembling a plurality of such units with the offset edge portions of adjacent units in contact, and welding together "said oflset edge portions to form a body having hollow radiating projections.

4. In the method of making radiating casings, the steps which consist in forming sub-- stantially U-shaped units having offset portions extending along the free edges and across the ends of the side walls of said units, assembling such units with the offset edge portions of adjacent units in contact, and welding together said ofl'set edge portions to form a body having hollow radiating projections.

5. The method of making-a radiating casing, consisting in formingsubstantially U- shaped units having oflset edge portions along the free edges of their side walls, welding together the offset edge portions of a plurality of said units to form a continuous body having hollow radiating members, forming said continuous body into tank form and thereby disposing said hollow members in radial positions, and uniting the ends of said body.

6. In the method of making radiating casings, the steps which consist in shaping substantially U-shaped units, the sides of which are to form radially or outwardly projecting portions of the casing, with projecting end portions lying in substantially the plane of the inner portions of said units, and with offset edge portions extending along the free edges of the side walls of said units and also along the edges of the projecting end portions, and welding to ether the offset edge portions of a plurality of such units to form abody having hollow radiating projections.

7. In the method of making radiating casings, the steps which consist 1n shaping substantially U-shaped units, the sides of which are to form radially or outwardly projecting portions of the casing, with projecting end portions lying in substantially the plane of theinner portions of said units, and with offset edge portions extending along the free edges of the side walls of said units and also along the edges of the projecting end portions, assembling a plurality of such units side by side and welding together their 'oll'set er lges to thereby form a continuous said body.

8. The method of making a radiating casing consisting of pressing suitable blanks to form substantially U-shaped units, welding a plurality of said units together to form a continuous sectional body having hollow radiating members, forming said body of units into cylindrical form thereby disposing said radiating members in radial positions, welding the free ends of said body together, and welding a suitable bottom) thereto.

9. The method of making a radiating casing consisting of pressing suitable blanks to form substantiall U-shaped units, placing a plurality of said units side by side and welding their terminal edges together thereby forming a body of such units having hollow radiating members, pressing said body of joined units to form a cylindrical vessel by bending each U-shaped unit at its middle integral connecting portion and dispos-.

ing the connected portions produced by the weld in radial positions, Welding the free ends of said body together, and Welding a suitable bottom thereto.

10. The method of making a radiating casing consisting of pressing suitable blanks to form substantially U-shaped units, securing a plurality of said units together by Welding their terminal edges together thereby forming a body of such units having hollow radiating members, pressing said body of joined units into a cylindrical shape and disposing said hollow radiating members in radial positions, welding the free ends of said body together, and securing a bottom thereto.

11. The method of making a radiating casing consisting of pressing suitable blanks to form substantially U-shaped units, placing a plurality of said units side by side and securing their terminal edges together thereby forming a body of such units having hollow radiating members, pressing said body of joined units into cylindrical form thereby disposing the connected portions produced by securing the terminal edges together in radial positions, securing the free ends of said body together, and securing a bottom thereto.

In testimony whereof I hereunto aflix my signatu re.

CHARLES SONNEBORN. 

